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Annotation of hatari/src/includes/int.h, revision 1.1.1.7

1.1       root        1: /*
1.1.1.2   root        2:   Hatari - int.h
                      3: 
                      4:   This file is distributed under the GNU Public License, version 2 or at
                      5:   your option any later version. Read the file gpl.txt for details.
1.1       root        6: */
                      7: 
1.1.1.2   root        8: #ifndef HATARI_INT_H
                      9: #define HATARI_INT_H
                     10: 
                     11: /* Interrupt handlers in system */
1.1.1.6   root       12: typedef enum
1.1.1.2   root       13: {
1.1       root       14:   INTERRUPT_NULL,
                     15:   INTERRUPT_VIDEO_VBL,
                     16:   INTERRUPT_VIDEO_HBL,
                     17:   INTERRUPT_VIDEO_ENDLINE,
                     18:   INTERRUPT_MFP_TIMERA,
                     19:   INTERRUPT_MFP_TIMERB,
                     20:   INTERRUPT_MFP_TIMERC,
                     21:   INTERRUPT_MFP_TIMERD,
                     22:   INTERRUPT_IKBD_RESETTIMER,
                     23:   INTERRUPT_IKBD_ACIA,
1.1.1.7 ! root       24:   INTERRUPT_IKBD_MFP,
1.1.1.4   root       25:   INTERRUPT_DMASOUND,
1.1.1.7 ! root       26:   INTERRUPT_DMASOUND_MICROWIRE,
1.1.1.6   root       27:   INTERRUPT_FDC,
1.1.1.7 ! root       28:   INTERRUPT_BLITTER,
1.1.1.4   root       29: 
1.1       root       30:   MAX_INTERRUPTS
1.1.1.6   root       31: } interrupt_id;
1.1       root       32: 
1.1.1.6   root       33: 
                     34: #define        INT_CPU_CYCLE           1
                     35: #define        INT_MFP_CYCLE           2
                     36: 
                     37: #define        INT_CPU_TO_INTERNAL     9600
                     38: #define        INT_MFP_TO_INTERNAL     31333
                     39: 
                     40: /* Convert cpu or mfp cycles to internal cycles */
                     41: #define INT_CONVERT_TO_INTERNAL( cyc , type )  ( type == INT_CPU_CYCLE ? (cyc)*INT_CPU_TO_INTERNAL : (cyc)*INT_MFP_TO_INTERNAL )
                     42: /*
                     43: #define INT_CONVERT_TO_INTERNAL( cyc , type )  ( type == INT_CPU_CYCLE ? cyc*INT_CPU_TO_INTERNAL :\
                     44:        ( ( (cyc*INT_MFP_TO_INTERNAL + INT_CPU_TO_INTERNAL*4 - 1) / (INT_CPU_TO_INTERNAL*4) ) * INT_CPU_TO_INTERNAL*4 ) )
                     45: */
                     46: 
                     47: /* Convert internal cycles to real mfp or cpu cycles */
                     48: /* Rounding is important : for example 9500 internal is 0.98 cpu and should give 1 cpu cycle, not 0 */
                     49: /* so we do (9500+9600-1)/9600 to get the closest higher integer */
                     50: //#define INT_CONVERT_FROM_INTERNAL( cyc , type )      ( type == INT_CPU_CYCLE ? (cyc+INT_CPU_TO_INTERNAL-1)/INT_CPU_TO_INTERNAL : (cyc+INT_MFP_TO_INTERNAL-1)/INT_MFP_TO_INTERNAL )
                     51: #define INT_CONVERT_FROM_INTERNAL( cyc , type )        ( type == INT_CPU_CYCLE ? (cyc)/INT_CPU_TO_INTERNAL : ((cyc)+INT_MFP_TO_INTERNAL-1)/INT_MFP_TO_INTERNAL )
                     52: 
                     53: 
                     54: 
                     55: extern void (*PendingInterruptFunction)(void);
                     56: extern int PendingInterruptCount;
1.1       root       57: 
                     58: extern void Int_Reset(void);
1.1.1.7 ! root       59: extern void Int_MemorySnapShot_Capture(bool bSave);
1.1       root       60: extern void Int_AcknowledgeInterrupt(void);
1.1.1.6   root       61: extern void Int_AddAbsoluteInterrupt(int CycleTime, int CycleType, interrupt_id Handler);
1.1.1.7 ! root       62: extern void Int_AddRelativeInterrupt(int CycleTime, int CycleType, interrupt_id Handler);
1.1.1.6   root       63: extern void Int_AddRelativeInterruptNoOffset(int CycleTime, int CycleType, interrupt_id Handler);
                     64: extern void Int_AddRelativeInterruptWithOffset(int CycleTime, int CycleType, interrupt_id Handler, int CycleOffset);
                     65: extern void Int_RemovePendingInterrupt(interrupt_id Handler);
                     66: extern void Int_ResumeStoppedInterrupt(interrupt_id Handler);
1.1.1.7 ! root       67: extern bool Int_InterruptActive(interrupt_id Handler);
1.1.1.6   root       68: extern int Int_FindCyclesPassed(interrupt_id Handler, int CycleType);
1.1.1.2   root       69: 
                     70: #endif /* ifndef HATARI_INT_H */

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